Feature Request / Improvement

This is a follow-up of #12808.

The PR uses the GoogleCredentials.getApplicationDefault() method to create the BigQuery client. The approach doesn't work well when we want to access multiple BigQuery projects from a single machine.

I recommend adding a new property reading JSON key or file with the GoogleCredentials.fromStream method.

Query engine

Starburst

Willingness to contribute

• I can contribute this improvement/feature independently
• I would be willing to contribute this improvement/feature with guidance from the Iceberg community
• I cannot contribute this improvement/feature at this time